From: Christoph Hellwig Date: Fri, 20 Dec 2013 13:16:46 +0000 (-0800) Subject: hfsplus: use generic posix ACL infrastructure X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=b0a7ab5706647844e7a1b91b0c31cdb3bee1e1cc;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git hfsplus: use generic posix ACL infrastructure Signed-off-by: Christoph Hellwig Reviewed-by: Vyacheslav Dubeyko Signed-off-by: Al Viro --- diff --git a/fs/hfsplus/acl.h b/fs/hfsplus/acl.h index 07c0d4947527..95c8ed9ec17f 100644 --- a/fs/hfsplus/acl.h +++ b/fs/hfsplus/acl.h @@ -12,16 +12,13 @@ /* posix_acl.c */ struct posix_acl *hfsplus_get_posix_acl(struct inode *inode, int type); -extern int hfsplus_posix_acl_chmod(struct inode *); +int hfsplus_set_posix_acl(struct inode *inode, struct posix_acl *acl, + int type); extern int hfsplus_init_posix_acl(struct inode *, struct inode *); #else /* CONFIG_HFSPLUS_FS_POSIX_ACL */ #define hfsplus_get_posix_acl NULL - -static inline int hfsplus_posix_acl_chmod(struct inode *inode) -{ - return 0; -} +#define hfsplus_set_posix_acl NULL static inline int hfsplus_init_posix_acl(struct inode *inode, struct inode *dir) { diff --git a/fs/hfsplus/dir.c b/fs/hfsplus/dir.c index 4a4fea002673..9ee62985e739 100644 --- a/fs/hfsplus/dir.c +++ b/fs/hfsplus/dir.c @@ -532,6 +532,7 @@ const struct inode_operations hfsplus_dir_inode_operations = { .removexattr = hfsplus_removexattr, #ifdef CONFIG_HFSPLUS_FS_POSIX_ACL .get_acl = hfsplus_get_posix_acl, + .set_acl = hfsplus_set_posix_acl, #endif }; diff --git a/fs/hfsplus/inode.c b/fs/hfsplus/inode.c index 37213d075f3c..2e10993fa966 100644 --- a/fs/hfsplus/inode.c +++ b/fs/hfsplus/inode.c @@ -319,7 +319,7 @@ static int hfsplus_setattr(struct dentry *dentry, struct iattr *attr) mark_inode_dirty(inode); if (attr->ia_valid & ATTR_MODE) { - error = hfsplus_posix_acl_chmod(inode); + error = posix_acl_chmod(inode, inode->i_mode); if (unlikely(error)) return error; } @@ -393,6 +393,7 @@ static const struct inode_operations hfsplus_file_inode_operations = { .removexattr = hfsplus_removexattr, #ifdef CONFIG_HFSPLUS_FS_POSIX_ACL .get_acl = hfsplus_get_posix_acl, + .set_acl = hfsplus_set_posix_acl, #endif }; diff --git a/fs/hfsplus/posix_acl.c b/fs/hfsplus/posix_acl.c index 277942f36f80..df0c9af68d05 100644 --- a/fs/hfsplus/posix_acl.c +++ b/fs/hfsplus/posix_acl.c @@ -17,9 +17,7 @@ struct posix_acl *hfsplus_get_posix_acl(struct inode *inode, int type) char *value = NULL; ssize_t size; - acl = get_cached_acl(inode, type); - if (acl != ACL_NOT_CACHED) - return acl; + hfs_dbg(ACL_MOD, "[%s]: ino %lu\n", __func__, inode->i_ino); switch (type) { case ACL_TYPE_ACCESS: @@ -56,17 +54,15 @@ struct posix_acl *hfsplus_get_posix_acl(struct inode *inode, int type) return acl; } -static int hfsplus_set_posix_acl(struct inode *inode, - int type, - struct posix_acl *acl) +int hfsplus_set_posix_acl(struct inode *inode, struct posix_acl *acl, + int type) { int err; char *xattr_name; size_t size = 0; char *value = NULL; - if (S_ISLNK(inode->i_mode)) - return -EOPNOTSUPP; + hfs_dbg(ACL_MOD, "[%s]: ino %lu\n", __func__, inode->i_ino); switch (type) { case ACL_TYPE_ACCESS: @@ -115,7 +111,7 @@ end_set_acl: int hfsplus_init_posix_acl(struct inode *inode, struct inode *dir) { int err = 0; - struct posix_acl *acl = NULL; + struct posix_acl *default_acl, *acl; hfs_dbg(ACL_MOD, "[%s]: ino %lu, dir->ino %lu\n", @@ -124,151 +120,21 @@ int hfsplus_init_posix_acl(struct inode *inode, struct inode *dir) if (S_ISLNK(inode->i_mode)) return 0; - acl = hfsplus_get_posix_acl(dir, ACL_TYPE_DEFAULT); - if (IS_ERR(acl)) - return PTR_ERR(acl); - - if (acl) { - if (S_ISDIR(inode->i_mode)) { - err = hfsplus_set_posix_acl(inode, - ACL_TYPE_DEFAULT, - acl); - if (unlikely(err)) - goto init_acl_cleanup; - } - - err = __posix_acl_create(&acl, GFP_NOFS, &inode->i_mode); - if (unlikely(err < 0)) - return err; - - if (err > 0) - err = hfsplus_set_posix_acl(inode, - ACL_TYPE_ACCESS, - acl); - } else - inode->i_mode &= ~current_umask(); - -init_acl_cleanup: - posix_acl_release(acl); - return err; -} - -int hfsplus_posix_acl_chmod(struct inode *inode) -{ - int err; - struct posix_acl *acl; - - hfs_dbg(ACL_MOD, "[%s]: ino %lu\n", __func__, inode->i_ino); - - if (S_ISLNK(inode->i_mode)) - return -EOPNOTSUPP; - - acl = hfsplus_get_posix_acl(inode, ACL_TYPE_ACCESS); - if (IS_ERR(acl) || !acl) - return PTR_ERR(acl); - - err = __posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode); - if (unlikely(err)) + err = posix_acl_create(dir, &inode->i_mode, &default_acl, &acl); + if (err) return err; - err = hfsplus_set_posix_acl(inode, ACL_TYPE_ACCESS, acl); - posix_acl_release(acl); - return err; -} - -static int hfsplus_xattr_get_posix_acl(struct dentry *dentry, - const char *name, - void *buffer, - size_t size, - int type) -{ - int err = 0; - struct posix_acl *acl; - - hfs_dbg(ACL_MOD, - "[%s]: ino %lu, buffer %p, size %zu, type %#x\n", - __func__, dentry->d_inode->i_ino, buffer, size, type); - - if (strcmp(name, "") != 0) - return -EINVAL; - - acl = hfsplus_get_posix_acl(dentry->d_inode, type); - if (IS_ERR(acl)) - return PTR_ERR(acl); - if (acl == NULL) - return -ENODATA; - - err = posix_acl_to_xattr(&init_user_ns, acl, buffer, size); - posix_acl_release(acl); - - return err; -} - -static int hfsplus_xattr_set_posix_acl(struct dentry *dentry, - const char *name, - const void *value, - size_t size, - int flags, - int type) -{ - int err = 0; - struct inode *inode = dentry->d_inode; - struct posix_acl *acl = NULL; - - hfs_dbg(ACL_MOD, - "[%s]: ino %lu, value %p, size %zu, flags %#x, type %#x\n", - __func__, inode->i_ino, value, size, flags, type); - - if (strcmp(name, "") != 0) - return -EINVAL; - - if (!inode_owner_or_capable(inode)) - return -EPERM; - - if (value) { - acl = posix_acl_from_xattr(&init_user_ns, value, size); - if (IS_ERR(acl)) - return PTR_ERR(acl); - else if (acl) { - err = posix_acl_valid(acl); - if (err) - goto end_xattr_set_acl; - } + if (default_acl) { + err = hfsplus_set_posix_acl(inode, default_acl, + ACL_TYPE_DEFAULT); + posix_acl_release(default_acl); } - err = hfsplus_set_posix_acl(inode, type, acl); - -end_xattr_set_acl: - posix_acl_release(acl); + if (acl) { + if (!err) + err = hfsplus_set_posix_acl(inode, acl, + ACL_TYPE_ACCESS); + posix_acl_release(acl); + } return err; } - -static size_t hfsplus_xattr_list_posix_acl(struct dentry *dentry, - char *list, - size_t list_size, - const char *name, - size_t name_len, - int type) -{ - /* - * This method is not used. - * It is used hfsplus_listxattr() instead of generic_listxattr(). - */ - return -EOPNOTSUPP; -} - -const struct xattr_handler hfsplus_xattr_acl_access_handler = { - .prefix = POSIX_ACL_XATTR_ACCESS, - .flags = ACL_TYPE_ACCESS, - .list = hfsplus_xattr_list_posix_acl, - .get = hfsplus_xattr_get_posix_acl, - .set = hfsplus_xattr_set_posix_acl, -}; - -const struct xattr_handler hfsplus_xattr_acl_default_handler = { - .prefix = POSIX_ACL_XATTR_DEFAULT, - .flags = ACL_TYPE_DEFAULT, - .list = hfsplus_xattr_list_posix_acl, - .get = hfsplus_xattr_get_posix_acl, - .set = hfsplus_xattr_set_posix_acl, -}; diff --git a/fs/hfsplus/xattr.c b/fs/hfsplus/xattr.c index 3c6136f98c73..bf88baa9bb65 100644 --- a/fs/hfsplus/xattr.c +++ b/fs/hfsplus/xattr.c @@ -7,6 +7,7 @@ */ #include "hfsplus_fs.h" +#include #include "xattr.h" #include "acl.h" @@ -15,8 +16,8 @@ const struct xattr_handler *hfsplus_xattr_handlers[] = { &hfsplus_xattr_user_handler, &hfsplus_xattr_trusted_handler, #ifdef CONFIG_HFSPLUS_FS_POSIX_ACL - &hfsplus_xattr_acl_access_handler, - &hfsplus_xattr_acl_default_handler, + &posix_acl_access_xattr_handler, + &posix_acl_default_xattr_handler, #endif &hfsplus_xattr_security_handler, NULL diff --git a/fs/hfsplus/xattr.h b/fs/hfsplus/xattr.h index 841b5698c0fc..9e214490c313 100644 --- a/fs/hfsplus/xattr.h +++ b/fs/hfsplus/xattr.h @@ -14,8 +14,6 @@ extern const struct xattr_handler hfsplus_xattr_osx_handler; extern const struct xattr_handler hfsplus_xattr_user_handler; extern const struct xattr_handler hfsplus_xattr_trusted_handler; -extern const struct xattr_handler hfsplus_xattr_acl_access_handler; -extern const struct xattr_handler hfsplus_xattr_acl_default_handler; extern const struct xattr_handler hfsplus_xattr_security_handler; extern const struct xattr_handler *hfsplus_xattr_handlers[];